EN 13371:2001
(Main)Cryogenic vessels - Couplings for cryogenic service
Cryogenic vessels - Couplings for cryogenic service
This European Standard specifies the minimum requirements for the design, manufacture and testing of couplings for cryogenic service to be used for temporary connecting of flexible hoses to cryogenic vessels at the following operating conditions :
- design temperature range from - 270 ° C to + 65 ° C ;
- maximum nominal pressure : 80 bar ;
- nominal size (DN) from 10 to 100.
Permanent connections such as flanges and unions are not covered by this standard.
It is intended that the couplings should be designed, tested and marked for service at one of the generally accepted pressure e.g. PN 40. Couplings can then be selected with a PN equal to or greater than the maximum allowable pressure (PS) of the equipment for which they are to be used.
Kryo-Behälter - Kupplungen für den tiefkalten Betrieb
Diese Norm legt Mindestanforderungen für Auslegung, Herstellung und Prüfung von Kupplungen für den tiefkalten Betrieb fest, die zeitlich begrenzt zur Verbindung von flexiblen Rohren (Schläuchen) unter folgenden Betriebs-bedingungen verwendet werden:
- Auslegungstemperatur: von - 270°C bis + 65 C,
- maximaler Nenndruck :80 bar,
- Nennweite (DN): 10 bis 100.
Ständige Verbindungen wie Flansche und Rohrverbindungsstutzen fallen nicht unter den Anwendungsbereich dieser Norm.
Es ist anzustreben, dass Kupplungen für eine genormte Druckstufe, z. B. PN 40, bemessen, geprüft und gekennzeichnet werden. Die Kupplungen können dann so ausgewählt werden, dass ihr Nenndruck PN gleich oder größer ist als der maximal zulässige Druck (PS) der Einrichtung , in den sie angewendet werden.
Récipients cryogéniques - Raccords pour service cryogénique
La présente Norme européenne spécifie les exigences minimales relatives à la conception, à la fabrication et aux essais des raccords pour service cryogénique utilisés temporairement pour raccorder les flexibles aux récipients cryogéniques dans les conditions suivantes de fonctionnement :
- plage de températures de calcul comprise entre - 270 °C et + 65 °C ;
- pression nominale maximale : 80 bar ;
- diamètre nominal (DN) de 10 à 100.
Les raccords à usage permanent tels que les brides et autres raccords unions ne sont pas couverts par la présente Norme européenne.
Il est recommandé de concevoir, essayer et marquer les raccords pour le service à une pression généralement admise, par exemple PN 40. Ils peuvent alors être associés à des récipients dont la pression maximale admissible (PS) est inférieure ou égale à leur pression nominale.
La présente norme spécifie les exigences minimales relatives à la conception, à la fabrication et aux essais des raccords pour service cryogénique utilisés temporairement pour raccorder les flexibles aux récipients cryogéniques dans les conditions suivantes de fonctionnement: - plage de températures de calcul comprise entre - 270°C et + 65°C; - pression nominale maximale: 80 bars; - diamètre nominal (DN) compris entre 10 et 100. Les raccords à usage permanent tels que les brides et autres raccords unions ne sont pas couverts par la présente norme.
Kriogene posode - Priključni nastavki za obratovanje v kriogenem področju
General Information
- Status
- Published
- Publication Date
- 11-Dec-2001
- Withdrawal Date
- 29-Jun-2002
- Technical Committee
- CEN/TC 268 - Cryogenic vessels
- Drafting Committee
- CEN/TC 268/WG 2 - Compatibility, insulation, accessories
- Current Stage
- 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
- Start Date
- 03-Mar-2024
- Completion Date
- 03-Mar-2024
Overview
EN 13371:2001 is a European Standard developed by CEN that specifies the minimum requirements for the design, manufacture, and testing of couplings for cryogenic service. This standard applies to couplings used for the temporary connection of flexible hoses to cryogenic vessels, providing guidance for safe and reliable operation under extreme temperature and pressure conditions. It covers couplings operating within a temperature range from -270 °C up to +65 °C, with maximum nominal pressures of 80 bar and nominal sizes (DN) ranging from 10 to 100.
This standard excludes permanent connection types such as flanges and unions. Instead, it focuses on couplings engineered for temporary connections, ensuring they meet stringent safety, quality, and durability criteria suitable for cryogenic applications.
Key Topics
Design and Construction:
Couplings must be operable across the full design temperature range and be robust enough to handle adverse handling scenarios such as drops or hammering. Design requirements also include controlled connect/disconnect forces, leak tightness, and resistance to vibrations. Couplings intended for flammable fluids must be electrically conductive.Materials:
Materials used must be compatible with the vessel piping, hoses, and cryogenic fluids - especially oxygen - and have sufficient toughness at low temperatures. Materials should resist corrosion, stress corrosion, and be suitable per EN 1252 standards for their temperature applications.Testing Requirements:
Prototype coupling samples undergo rigorous testing including:- Hydraulic pressure test at 1.5 times nominal pressure
- Leak tests at ambient and cryogenic temperatures (using nitrogen, air, or helium gases)
- Strength tests up to three times nominal pressure
- Functional cycling tests (up to 500 connect/disconnect cycles) for durability
Cleaning and Marking:
Couplings must conform to EN 12300 cleanliness standards. They should also be clearly and permanently marked with critical information including nominal pressure (PN), fluid type, minimum specified temperature, and the EN standard number.Safety Compliance:
EN 13371 supports compliance with the EU Pressure Equipment Directive (PED 97/23/EC), ensuring couplings meet essential safety and operational requirements mandated by EU regulations.
Applications
EN 13371 couplings are critical components in industries handling cryogenic fluids such as liquid nitrogen, oxygen, argon, and helium. They are widely used for:
- Temporary connections between flexible hoses and cryogenic storage vessels
- Industrial gas supply systems requiring safe and reliable hose coupling solutions
- Transportation of cryogenic fluids in tanker vehicles and transfer lines
- Applications where electrical conductivity and pressure resistance are crucial, especially for flammable cryogenic fluids
- Situations where repeated connection cycles are expected without compromising safety
These couplings enable safe transfer of ultra-cold fluids while withstanding mechanical stresses and preventing leaks, thus ensuring operational safety and environmental protection.
Related Standards
- EN 1252-1 and EN 1252-2: Material toughness requirements for cryogenic temperatures
- EN 1333:1996: Definition and selection of nominal pressure (PN) for pipework components
- EN 1797-1: Compatibility of materials used in cryogenic vessels with gases
- EN 12300: Cleanliness requirements for cryogenic vessels and components
- EN 12434:2000: Cryogenic flexible hoses, closely related to the couplings covered under EN 13371
- EN ISO 6708:1995: Standardizes nominal sizes (DN) for pipework components
By adhering to EN 13371:2001, manufacturers and users of cryogenic vessels are assured of couplings that not only meet high safety and performance standards under extreme temperature conditions but also comply with relevant EU safety directives. This standard is essential for professionals in cryogenic system design, manufacturing, testing, and quality assurance seeking robust, tested coupling solutions for critical cryogenic fluid applications.
Frequently Asked Questions
EN 13371:2001 is a standard published by the European Committee for Standardization (CEN). Its full title is "Cryogenic vessels - Couplings for cryogenic service". This standard covers: This European Standard specifies the minimum requirements for the design, manufacture and testing of couplings for cryogenic service to be used for temporary connecting of flexible hoses to cryogenic vessels at the following operating conditions : - design temperature range from - 270 ° C to + 65 ° C ; - maximum nominal pressure : 80 bar ; - nominal size (DN) from 10 to 100. Permanent connections such as flanges and unions are not covered by this standard. It is intended that the couplings should be designed, tested and marked for service at one of the generally accepted pressure e.g. PN 40. Couplings can then be selected with a PN equal to or greater than the maximum allowable pressure (PS) of the equipment for which they are to be used.
This European Standard specifies the minimum requirements for the design, manufacture and testing of couplings for cryogenic service to be used for temporary connecting of flexible hoses to cryogenic vessels at the following operating conditions : - design temperature range from - 270 ° C to + 65 ° C ; - maximum nominal pressure : 80 bar ; - nominal size (DN) from 10 to 100. Permanent connections such as flanges and unions are not covered by this standard. It is intended that the couplings should be designed, tested and marked for service at one of the generally accepted pressure e.g. PN 40. Couplings can then be selected with a PN equal to or greater than the maximum allowable pressure (PS) of the equipment for which they are to be used.
EN 13371:2001 is classified under the following ICS (International Classification for Standards) categories: 23.020.40 - Cryogenic vessels; 23.040.70 - Hoses and hose assemblies. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 13371:2001 is associated with the following European legislation: EU Directives/Regulations: 2014/68/EU, 94/55/EC, 96/49/EC, 96/86/EC, 96/87/EC, 97/23/EC; Standardization Mandates: M/071, M/086. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN 13371:2001 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Cryogenic vessels - Couplings for cryogenic serviceSRGURþMXRécipients cryogéniques - Raccords pour service cryogéniqueKryo-Behälter - Kupplungen für den tiefkalten BetriebTa slovenski standard je istoveten z:EN 13371:2001SIST EN 13371:2002en23.040.7023.020.40ICS:SLOVENSKI
STANDARDSIST EN 13371:200201-november-2002
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13371December 2001ICS 23.020.40; 23.040.70English versionCryogenic vessels - Couplings for cryogenic serviceRécipients cryogéniques - Raccords pour servicecryogéniqueKryo-Behälter - Kupplungen für den tiefkalten BetriebThis European Standard was approved by CEN on 11 November 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13371:2001 E
Clauses of this European Standard addressing essential requirements or otherprovisions of EU directives.8Bibliography.9
...
La norme EN 13371:2001, intitulée "Vessels cryogéniques - Raccords pour service cryogénique", établit des exigences minimales pour la conception, la fabrication et les tests des raccords destinés aux services cryogéniques. Son champ d'application se concentre sur les raccords temporaires connectant des tuyaux flexibles à des récipients cryogéniques dans des conditions spécifiques, telles qu'une plage de température de conception variant de -270 °C à +65 °C et une pression nominale maximale de 80 bar, avec une taille nominale (DN) allant de 10 à 100. Une des forces majeures de cette norme est son orientation vers le secteur cryogénique, répondant ainsi à des besoins précis des industries utilisant des températures extrêmement basses. En définissant des critères stricts pour le design et la fabrication des raccords, la norme garantit non seulement la sécurité, mais aussi l'efficacité des connexions temporaires. De plus, la norme stipule que les raccords doivent être conçus et testés pour un service à une pression généralement acceptée, typiquement PN 40, ce qui souligne l'importance de la conformité à des standards de sécurité élevés dans des applications critiques. L'absence de couverture pour les connexions permanentes telles que les brides et les unions permet une spécialisation des raccords temporaires, renforçant ainsi leur pertinence pour les applications où des mises en œuvre rapides et efficaces sont nécessaires. Ainsi, la norme EN 13371:2001 se positionne comme un outil essentiel pour concevoir des systèmes sécurisés et fiables dans le domaine des services cryogéniques, offrant une référence claire pour les fabricants et utilisateurs de ces équipements. En résumé, la norme EN 13371:2001 est un document fondamental qui répond à des exigences spécifiques liées aux raccords pour services cryogéniques, en garantissant la sécurité et la fiabilité dans un domaine technique spécialisé.
The EN 13371:2001 standard comprehensively outlines the essential requirements for the design, manufacture, and testing of couplings intended for cryogenic service. This European Standard plays a vital role in ensuring the safety and reliability of couplings used in the temporary connection of flexible hoses to cryogenic vessels, emphasizing its relevance in industries dealing with cryogenic fluids. One of the key strengths of this standard lies in its clearly defined operational parameters, which include a design temperature range from -270 °C to +65 °C and a maximum nominal pressure of 80 bar. By stipulating these stringent conditions, the standard serves to mitigate risks associated with the extreme temperatures and pressures characteristic of cryogenic applications. The specification of nominal sizes from DN 10 to DN 100 further enhances the usability of the couplings across various applications, adding to the versatility of the standard. Moreover, the EN 13371:2001 standard prioritizes safety through rigorous testing and marking protocols for couplings, thereby ensuring that they are suitable for service at commonly accepted pressure levels, such as PN 40. This focus on safety underlines the standard’s commitment to providing robust guidelines that protect both personnel and equipment in cryogenic environments. However, it is important to note that the standard explicitly excludes permanent connections such as flanges and unions, which may limit its scope in certain applications. Nonetheless, by concentrating on couplings for temporary connections, the standard ensures a high level of specificity and clarity, allowing manufacturers and users alike to adopt a targeted approach when implementing these safety standards. In conclusion, the EN 13371:2001 standard for cryogenic vessels and couplings is a critical reference point for organizations operating in industries where cryogenic services are prevalent. Its well-defined scope, detailed requirements, and emphasis on safety reinforce its importance and applicability, making it an indispensable asset in the field of cryogenic engineering.
EN 13371:2001は、極低温サービスのためのカップリングに関する標準であり、その設計、製造、および試験に関する最低要件を規定しています。この標準の主な範囲は、極低温容器とフレキシブルホースを一時的に接続するために使用されるカップリングであり、設計温度範囲は-270°Cから+65°C、また最大名目圧力は80バール、名目サイズ（DN）は10から100までを含んでいます。なお、フランジやユニオンのような恒久的接続は、この標準には含まれていません。 この標準の強みは、極低温環境における安全性と信頼性を確保するために、厳格な設計基準とテスト要件を設けている点です。また、カップリングは一般的に受け入れられている圧力（例えば、PN 40）でサービスのために設計、試験、およびマーキングされることが意図されています。この対応により、カップリングは、安全に高圧に耐えることができるように選定できます。 EN 13371:2001は、極低温域でのカップリング使用において、特に重要な役割を果たしており、関連する業界にとって、堅牢で信頼性の高い接続部品を提供する為の基盤となります。従って、この標準は、極低温技術に従事するエンジニアや製造業者にとって、非常に重要かつ relevantな文書です。
표준 EN 13371:2001은 극저온 용기에 사용되는 커플링의 설계, 제조 및 테스트에 대한 최소 요건을 규정하고 있습니다. 이 유럽 표준의 목적은 -270 °C에서 +65 °C의 설계 온도 범위와 최대 공칭 압력 80 bar를 기준으로 임시로 유연한 호스를 극저온 용기에 연결하는 데 적합한 커플링을 제공하기 위함입니다. 이 표준의 강점 중 하나는 커플링의 설계와 테스트 과정에서 일반적으로 허용되는 압력(PN 40) 기준에 따라 적절하게 설계되고 표시되어야 한다는 점입니다. 이를 통해 사용자들은 커플링의 성능을 효과적으로 확인하고, 사용하려는 장비의 최대 허용 압력(PS)보다 같거나 더 큰 PN으로 커플링을 선택할 수 있습니다. 또한, 본 표준은 플랜지 및 유니온과 같은 영구 연결에는 적용되지 않으며, 극저온 서비스에 특화된 커플링에 대한 명확한 지침을 제공합니다. EN 13371:2001의 기준은 다양한 산업에서 극저온 물질을 안전하게 취급하고 연결할 수 있는 기초를 마련하고 있으며, 따라서 현재와 미래의 다양한 응용 분야에서 매우 중요한 역할을 하고 있습니다. 이러한 이유로 EN 13371:2001은 극저온 용기와 관련된 커플링 기술의 표준화에 있어 필수적인 문서로, 업계 전문가와 기술자들이 이 표준을 참조함으로써 안전하고 효율적인 극저온 서비스가 이루어질 수 있도록 하고 있습니다.
Die EN 13371:2001 ist eine wichtige europäische Norm, die die Mindestanforderungen für die Konstruktion, Herstellung und Prüfung von Kupplungen für kryogene Anwendungen festlegt. Diese Norm konzentriert sich auf die temporäre Verbindung von flexiblen Schläuchen mit kryogenen Behältern unter extremen Betriebsbedingungen, die Temperaturen von -270 °C bis +65 °C sowie einen maximalen Nenndruck von 80 bar umfassen. Ein herausragendes Merkmal dieser Norm ist ihre klare Definition des Anwendungsbereichs, in dem sie die spezifischen Anforderungen für Kupplungen präzisiert, während permanente Verbindungen wie Flansche und Verbindungen nicht behandelt werden. Somit bietet die EN 13371:2001 eine gezielte Lösung für Betreiber von Anlagen, die mit kryogenen Flüssigkeiten arbeiten, und gewährleistet eine hohe Sicherheit und Zuverlässigkeit in der Handhabung. Die Möglichkeit, Kupplungen mit einem Druckniveau (PN) zu wählen, das gleich oder höher als der maximal zulässige Druck (PS) der verwendeten Geräte ist, unterstreicht die Flexibilität und Relevanz der Norm im Alltag. Dies ermöglicht es den Anwendern, geeignete Komponenten auszuwählen, die den spezifischen Anforderungen ihrer kryogenen Anwendungen gerecht werden. Zusammengefasst bietet die EN 13371:2001 eine wesentliche Grundlage für die Sicherheit und Effizienz in der kryogenen Technik, indem sie strukturierte Vorgaben für die Auswahl, den Test und die Kennzeichnung von Kupplungen definiert.
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...